When networks use automounting to mount
directories upon demand by a user, the absolute
full path of a file commonly looks like
/tmp_mnt/home/kate/..../filename
/.automount/home/kate/.../filename
/.autofs/home/kate/.../filename
while all the user normally sees is
/home/kate/..../filename
This "automount prefix" can actually be
set by the system administrator, and so could
potentially be anything.
Now
spkg/standard/sage_scripts-2.5/sage-test
calls os.path.abspath, which returns
the absolute path. This causes 'make test'
to fail for me on automounted file systems,
but not on simply mounted file systems.
A fix is
def strip_automount_prefix(filename):
str = filename.split("/",2)
new = "/" + str[2]
if os.path.exists(new):
inode1 = os.stat(filename)[1]
inode2 = os.stat(new)[1]
if inode1 == inode2:
filename = new
return filename
and then "wrap" each of the three
instances of os.path.abspath in sage-test with
strip_automount_prefix; i.e,
strip_automount_prefix(os.path.abspath(filename)).
When I do this, 'make test' now finishes
with no problems.
os.path.abspath is also used in other
sage scripts:
sage-doctest
sage-libdist
sage-location
but either they do not cause a problem
or I have not stumbled over a problem yet.
If someone knows of a better fix, I would
be interested in hearing about it.
--
Kate Minola
University of Maryland, College Park
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